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disa [49]
2 years ago
8

Which numbers are perfect squares?

Mathematics
2 answers:
Iteru [2.4K]2 years ago
8 0

Answer:

1² = 1

2² = 4

3² = 9

4² = 16

5² = 25

6² = 36

7² = 49

8² = 64

9² = 81

10² = 100

11² = 121

12² = 144 ,

Step-by-step explanation:

HOPE THIS HELPS

PLZZ MARK BRAINLIEST

solmaris [256]2 years ago
7 0

Answer:

4 and 4?

Step-by-step explanation:

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mariarad [96]

Answer:

A

Step-by-step explanation:

<h3>Numerator</h3>

(3x)(3x) = 9x^2

√9x^2 = 3x

Numerator = 3x

<h3>Denominator</h3>

√18y^2 = √18 · √y^2

√18 = 3√2

√y^2 = y

3√2y

Denominator = 3√2y

Now we need to rationalize the denominator, and get rid of the square root on the bottom

\frac{3x}{3\sqrt{2} y} * \frac{3\sqrt{2} }{3\sqrt{2}} = \frac{6x\sqrt{2} }{12y} = \frac{x\sqrt{2} }{2y}

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2 years ago
I have 2 Questions.
aleksandr82 [10.1K]

Answer:

looks hard omgong

5 0
2 years ago
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What does circumference stand for?
lord [1]

Answer:

Think of it as the perimeter of the circle 

6 0
3 years ago
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I would really appreciate help with the following, along with work shown so I can understand how these were solved.
Alja [10]

First, you have to know the double angle formula:

sin 2A  =  2 sin A cos A

cos 2A  =  cos² A − sin² A  =  2 cos² A − 1  =  1 − 2 sin² A

tan 2A<span> = 2 tan </span>A<span> / (1 − tan² </span>A)


Next, find the other leg: 17^2-15^=64, √64 is 8, so the unknown leg length is 8.

sinα=15/17, cosα=8/17, tanα=15/8

sinβ=8/17, cosβ15/17, tanβ=8/15

Plug these values in the above formula, you'll have your answers.


For the half angles, know the half-angle formula:

sin(B/2) = ± √<span>(1 − cos B)/2</span>

cos(B/2) = ± √<span>(1 + cos B)/2</span>

tan(B/2)  =  (1 − cos B) / sin B<span>  =  sin </span>B<span> / (1 + cos </span>B)

refer to this website for details:

<span>https://brownmath.com/twt/double.htm
</span>


For the power reduction formula, please search for it. I tried to copy and paste here, but it wouldn't paste. 

for number 4, factor the quadratic equation into (cscx-8)(cscx+1)=0

cscx=8 or cscx=-1

You may not have the csc button on your calculator. Recall that csc is 1/sin, so sinx=1/8 or sinx=-1, so x is either 7.18 or 270 degrees



6 0
3 years ago
A regular polygon had n-folds rotation symmetry. how many line of symmetry must it have
VashaNatasha [74]
6.6 Symmetries of Regular Polygons A Solidify Understanding Task A line that reflects a figure onto itself is called a line of symmetry. A figure that can be carried onto itself by a rotation is said to have rotational symmetry. A diagonal of a polygon is any line segment that connects non-consecutive vertices of the polygon. For each of the following regular polygons, describe the rotations and reflections that carry it onto itself: (be as specific as possible in your descriptions, such as specifying the angle of rotation) 1. An equilateral triangle 2. A square 3. A regular pentagon 4. A regular hexagon  
3 0
2 years ago
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